I have a project database with a large part in a flat table. The projects table has information on planning, equipment, design and contract infromation. Other tables are employees, invoices, funding etc. Most projects don't have go thru all phases; therefore don't have data in all tables (planning, equipment, design and contract). Should I split this into four tables? If so, how is a record inititated in one of these tables? A yes/no box?
TIA,
bdriscoll